add CSV data

.github/workflows/cacheCycles.yml

@@ -32,6 +32,10 @@ jobs:
             - uses: ljharb/actions/node/install@main
 
             - run: node cacheCycles.mjs
+              name: cache EOL data
+
+            - run: node csv.mjs
+              name: update cached CSV data
 
             - run: git checkout data
 

csv.mjs

@@ -0,0 +1,16 @@
+import { join } from 'path';
+import { writeFile } from 'fs/promises';
+import data from './out/data.json' with { type: 'json' };
+
+const dataRows = Object.entries(data);
+
+const csv = [
+    ['package', 'version', 'released', 'eol'],
+].concat(dataRows.flatMap(([p, os]) => os.map(x => (
+    [p, x.latest, x.latestReleaseDate, x.eol]
+))));
+
+const outDir = join(process.cwd(), 'out');
+const outFile = join(outDir, 'data.csv');
+
+await writeFile(outFile, csv.join('\n'));